What is the cross-sectional area of this pillar?

I received a personal reproof from the department manager.

This product comes with a one-year guarantee.

We guarantee your safety.

We assure your success.

We ensure your safety.

Reading this supplementary explanation will deepen your understanding.

This report needs a supplement and correction.

He supplemented and corrected the errors in the report.

He was obstructing the way in the corridor.